What is 'archive of vacancies'? Can I still retrieve a vacancy from the archive?

Vacancies validity is specified when entering a date in the “Expiry date” field on Job edit page. After reaching the specified date, vacancies are been automatically placed in the archive. Archive vacancies are not displayed in the front-end of the vacancies page, but they are preserved and always available for editing. You can remove the job from the archive. To do this, enter a new date in the “Expiry date” and click “Update” button. If you specify wrong (already past) date in the “Expiry date”, the vacancy will be available till the next archivation. You can set the time of daily archivation using the settings page of the plugin. If the field “Expiry date” is empty, the vacancy is considered to be constant.